The Impact of Wrong Assumptions in BAO Reconstruction

The process of density field reconstruction enhances the statistical power of distance scale measurements using baryon acoustic oscillations (BAO). During this process a fiducial cosmology is assumed in order to convert sky coordinates and redshifts into distances; fiducial bias and redshift-space-distortion parameters are also assumed in this procedure. We analytically assess the impact of incorrect cosmology and bias assumptions on the post-reconstruction power spectra using low-order Lagrangian perturbation theory, deriving general expressions for the incorrectly reconstructed spectra. We find that the BAO peak location appears to shift only by a negligible amount due to wrong assumptions made during reconstruction. However, the shape of the BAO peak and the quadrupole amplitude can be affected by such errors (at the percent- and five-percent-level respectively), which potentially could cause small biases in parameter inference for future surveys; we outline solutions to such complications.Comment: 18 pages, 3 figures; comments welcome. v2 matches JCAP accepted versio

The detection of the imprint of filaments on cosmic microwave background lensing

Galaxy redshift surveys, such as 2dF, SDSS, 6df, GAMA and VIPERS, have shown that the spatial distribution of matter forms a rich web, known as the cosmic web. The majority of galaxy survey analyses measure the amplitude of galaxy clustering as a function of scale, ignoring information beyond a small number of summary statistics. Since the matter density field becomes highly non-Gaussian as structure evolves under gravity, we expect other statistical descriptions of the field to provide us with additional information. One way to study the non-Gaussianity is to study filaments, which evolve non-linearly from the initial density fluctuations produced in the primordial Universe. In our study, we report the first detection of CMB (Cosmic Microwave Background) lensing by filaments and we apply a null test to confirm our detection. Furthermore, we propose a phenomenological model to interpret the detected signal and we measure how filaments trace the matter distribution on large scales through filament bias, which we measure to be around 1.5. Our study provides a new scope to understand the environmental dependence of galaxy formation. In the future, the joint analysis of lensing and Sunyaev-Zel'dovich observations might reveal the properties of `missing baryons', the vast majority of the gas which resides in the intergalactic medium and has so far evaded most observations

Cyclic AMP metabolism and adenylate cyclase concentration in patients with advanced hepatic cirrhosis

Glucagon was tested for its effect on plasma adenosine 3′,5′-cyclic monophosphate (cyclic AMP), insulin, and glucose in healthy subjects and in patients with advanced cirrhosis of the liver. In the normal subjects, intravenous infusion of glucagon caused a significant increase in plasma cyclic AMP, glucose, and insulin. In advanced cirrhotics, plasma cyclic AMP, glucose, and insulin did not increase. Adenylate cyclase concentration was measured in liver tissue from end stage cirrhotic patients and from brain-dead organ donors whose cardiovascular function was maintained in a stable state. Basal and total adenylate cyclase concentration were not different in the two groups. Adenylate cyclase from the livers of advanced cirrhotics was, however, significantly less responsive to glucagon stimulation than was that from donor livers. Hepatocytes in advanced cirrhosis have abnormal metabolic behavior characterized by abnormal adenylate cyclase-cyclic AMP response to hormonal stimulation. © 1978

"Preferred reading" of Legal Texts

In the 1970s, British cultural theorist Stuart Hall introduced a concept known as preferred reading. It combines the ideological influence of mass media and dominant ways of understanding any text. This article focuses on mass media as a source of ideological background or context of legal interpretation and of any reading of legal texts. Law operates in culture and culture represents limitations in the law, according to the needs of dominant ideology. Culture introduces structures of domination which manipulate law. An important role is also given to popular culture and mass culture. These parts of the culture industry create borders in which the recipients (audience) think of law. Through mass media – rather than through other channels – dominant ideology infiltrates law. Legal consciousness is formed by dominant cultural frames formed by dominant ideology. Through this formation of mass media, law becomes a commodity. It shares the same values or contents as that of cultural industry and is the place where the theory of preferred reading can be introduced. According to the aforementioned theory, there are methods of interpretation that are more accurate than others are. This is simply because they lead to a result that is more preferred by ‘common opinion’ disseminated by mass culture.V roce 1970, britský kulturní teoretik Stuart Hall představil koncept známý jako preferovaného čtení. Ten v sobě spojuje ideologický vliv masových médií a dominantní způsoby chápání jakéhokoli textu. Tento článek se zaměřuje masová média jako zdroj ideologického pozadí nebo kontextu právního výkladu. Právo působí v kultuře a kultura představuje omezení právo dle potřeb dominantní ideologie. Kultura vytváří struktury dominace, které manipulují právem. Důležitou roli také sehrává populární a masová kultura. Tyto části kulturního průmyslu vytváří hranice, ve kterých příjemci (publikum) uvažují o právu. Prostřednictvím masových médií - spíše než prostřednictvím jiných kanálů - dominantní ideologie infiltruje právo. Právní vědomí je tvořeno dominantními kulturními rámci vytvořenými dominantní ideologií. Prostřednictvím této formace vytvářené masovými médii se právo stává komoditou. Sdílí proto stejné hodnoty, nebo obsah jaké definuje kulturní průmysl. Proto lze i v právním kontextu uvažovat o tzv. preferovaném čtení. Proto lze identifikovat paradigmata výkladu, které jsou mnohem "použeitelnější" než jiné, protože vedou k očekávaným výsledkům. K výsledkům, které odpovídají očekávání masového publika.In the 1970s, British cultural theorist Stuart Hall introduced a concept known as preferred reading. It combines the ideological influence of mass media and dominant ways of understanding any text. This article focuses on mass media as a source of ideological background or context of legal interpretation and of any reading of legal texts. Law operates in culture and culture represents limitations in the law, according to the needs of dominant ideology. Culture introduces structures of domination which manipulate law. An important role is also given to popular culture and mass culture. These parts of the culture industry create borders in which the recipients (audience) think of law. Through mass media – rather than through other channels – dominant ideology infiltrates law. Legal consciousness is formed by dominant cultural frames formed by dominant ideology. Through this formation of mass media, law becomes a commodity. It shares the same values or contents as that of cultural industry and is the place where the theory of preferred reading can be introduced. According to the aforementioned theory, there are methods of interpretation that are more accurate than others are. This is simply because they lead to a result that is more preferred by ‘common opinion’ disseminated by mass culture

The Atacama Cosmology Telescope: A Measurement of the Cosmic Microwave Background Power Spectrum at 148 and 218 GHz from the 2008 Southern Survey

We present measurements of the cosmic microwave background (CMB) power spectrum made by the Atacama Cosmology Telescope at 148 GHz and 218 GHz, as well as the cross-frequency spectrum between the two channels. Our results clearly show the second through the seventh acoustic peaks in the CMB power spectrum. The measurements of these higher-order peaks provide an additional test of the {\Lambda}CDM cosmological model. At l > 3000, we detect power in excess of the primary anisotropy spectrum of the CMB. At lower multipoles 500 < l < 3000, we find evidence for gravitational lensing of the CMB in the power spectrum at the 2.8{\sigma} level. We also detect a low level of Galactic dust in our maps, which demonstrates that we can recover known faint, diffuse signals.Comment: 19 pages, 13 figures. Submitted to ApJ. This paper is a companion to Hajian et al. (2010) and Dunkley et al. (2010

The Early Reception of Pliny the Younger in Tertullian of Carthage and Eusebius of Caesarea

In 1967 Alan Cameron published a landmark article in this journal, ‘The fate of Pliny's Letters in the late Empire’. Opposing the traditional thesis that the letters of Pliny the Younger were only rediscovered in the mid to late fifth century by Sidonius Apollinaris, Cameron proposed that closer attention be paid to the faint but clear traces of the letters in the third and fourth centuries. On the basis of well-observed intertextual correspondences, Cameron proposed that Pliny's letters were being read by the end of the fourth century at the latest. That article now seems the vanguard of a rise in scholarly interest in Pliny's late-antique reception. But Cameron also noted the explicit attention given to the letters by two earlier commentators—Tertullian of Carthage, in the late second to early third century, and Eusebius of Caesarea, in the early fourth. The use of Pliny in these two earliest commentators, in stark contrast to their later successors, has received almost no subsequent attention